1. Recycling and Desalination Section
2015 UWMPs:
Wastewater and
Recycled Water
Toni Pezzetti, PG, CHG
Recycling and Desalination Section
November/December 2015

2. Discussion Items Definitions Reporting changes and why
Integration with 2015 Recycled Water Survey
What happens to collected data

3. Code Requirements
California Water Code describes wastewater and recycled water reporting requirements
No code changes since 2010
Slight modifications to requested reporting to improve usability of the data

4. Wastewater: What it is and isn’t
It’s not just a waste anymore
It is regulated and monitored as a waste by the RWQCBs
It is also a valuable water resource that can meet local water demands
BENEFICIAL USE
How does wastewater become water supply?

5. Recycled Water Definition
Water which, as a result of treatment of waste, is suitable for a direct beneficial use or a controlled use that would not otherwise occur and is therefor considered a valuable resource. Water Code Section 13050(n)

6. Recycled Water Definition
The legal definition does not specify the source of water . . .
Municipal wastewater source
Agricultural reuse source
Industrial internal reuse source
UWMPs and the recycled water surveys track municipal recycled wastewater

7. Municipal Recycled Water Types
Title 22 covers a range of recycled water qualities
Secondary, Undisinfected
Secondary, Disinfected-23
Secondary, Disinfected-2.2
Tertiary
Advanced
See CCR §60301 and §60320 for definitions
• Secondary, Undisinfected (California Code of Regulations,CCR § ) – oxidized wastewater.
• Secondary, Disinfected-23 (CCR § ) - Oxidized and disinfected wastewater.
• Secondary, Disinfected-2.2 (CCR § ) - Oxidized and disinfected to a higher level than Secondary, Disinfected-23.
• Tertiary (CCR § ) – Oxidized, filtered, and disinfected wastewater to achieve both bacterial and virus removal.
• Advanced (CCR § ) - Treatment technologies beyond conventional coagulation, filtration and disinfection, including reverse osmosis, micro- or nanofiltration, ozonation, or advanced oxidation. Refer to the CCR for specific requirements.

8. Recycled Water Uses Allowed Under Title 22
Recycled Water Uses Allowed Under Title 22*: it isn’t just tertiary water
*California Code of Regulations

9. Recycled Water Definition
Two requirements treated municipal water must meet to be classified as recycled water in UWMPs. It must be reused:
• Beneficially, in a manner consistent with Title 22 • In accordance with a RWQCB permit (NPDES, WDR, or WRR)

10. Why is Terminology Important
Reduces confusion and incorrect classification of water
Supports understanding of recycled water use
Provides clarity, especially with potential changes in how recycled water is used
SWA (surface water augmentation)
DPR (direct potable reuse)

11. What Happened to the 2010 UWMP Wastewater Data?
Because of inconsistencies and duplications in how the data were reported, it was not usable and was not released.
Changes to the 2015 are implemented – in spite of no code changes – to support improved reporting

12. Recycled Water and Wastewater are Complicated
UWMP B
UWMP A

13. What is Different in 2015?
UWMP data will be integrated with statewide recycled water survey conducted with the SWRCB
Guidebook Appendix M prepared to help clarify terminology
Disposal vs recycling
Supplemental water
Etc

14. Recycled water Data collection

15. Inquiring Minds Want to Know How Much Recycled Water Use is Increasing
2009
2015
900,000
800,000 ?
ACRE-FEET PER YEAR

16. How Much Recycled Water Were We Using In 2009?
URBAN WATER USE:
4.3 percent of total*
AGRICULTURAL
WATER USE:
0.7 percent of total*
* Based on the California Water Plan and the Recycled Water Survey

17. Integrate Data From Multiple Sources
UWMP data to DWR
WWTP data to SWRCB
IRWM
SRF
Water Recycling Fund
Grant and loan recipients
Water Suppliers
WW treatment operators
Title XVI
Single, defensible recycled water
data set

18. What RW Data Will Collected?
Data primarily will be reported in tables, but information is also contained within text
Five tables with variable reporting requirements
Water Retail vs Wholesale
Recycled Water Users vs Non-Users and Distributors vs Producers

19. Don’t forget to mention alternative water supplies!
Reporting in the UWMP
Wastewater or recycled water can be in a separate section or part of the water supplies chapter
We’re asking for more background information and a RW system map
Don’t forget to mention alternative water supplies!
Desalination
Gray Water
Storm Water

20. What Crops are Being Irrigated?
Artichokes
Tertiary-Treated Recycled Water
Undisinfected Secondary Recycled Water
Strawberries
Wheat
Celery
Triticale
Alfalfa

21. UWMP - Highlight Creative Uses!
Contra Costa Animal Shelter
Central Contra Costa Sanitation District
Animal facility wash down
Contra Costa Times
DSRSD
Publicly available fill station
City of Livermore
Fire fighting
Marin Municipal Water District
Car washes

22. UWMP Tables

23. Appendix M Provides Help for Completing Tables

24. Wastewater Generation - Retailer
Retailer Only

25. Wastewater Treatment & Disposal
Table is the same for retailer and wholesalers that provide supplemental treatment

26. Beneficial Uses - Retailer

27. Beneficial Uses – Wholesaler that Provides Supplemental Treatment

28. Projected vs Actual Comparison - Retailer

29. Projected vs Actual Comparison - Wholesaler that Provides Supplemental Treatment

30. Expansion Methods - Retailer
Retailer Only

31. Where does the WW and RW UWMP data go?
2015 UWMP Recycled Water Data
2018 California Water Plan
2015 Recycled Water Survey
Data Requests
2017 Report on Recycled Water Use in California

32. Questions? . . . and Halloween Chuckles EBMUD staff as El Nino
The Drought
EBMUD staff as El Nino
. . . and Halloween Chuckles